Preh ECUs manage BMW ActiveHybrid 5’s Li-ion battery.
Preh integrates electronic control units for the management of the lithium-ion battery in BMW’s new ActiveHybrid 5 sedan. The hybrid’s high-voltage battery supplies 320V, which is constantly stressed through electric driving, regenerative braking and during charging. Individual cells charge at different rates, depending on the degree of aging and the cells’ manufacturing tolerance. A passive balancing system adjusts cells’ varying discharge rates by specifically ...
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